यदि \(a_1=60\) और (a_{n+1}=a_n-n(n+1)) है तो \(a_4\) क्या होगा?

If \(a_1=60\) and (a_{n+1}=a_n-n(n+1)), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. (40)

Step 1

Concept

The terms are (60,58,52,40), so \(a_4=40\). Exam tip: calculate the product and then subtract.

Step 2

Why this answer is correct

The correct answer is A. (40). The terms are (60,58,52,40), so \(a_4=40\). Exam tip: calculate the product and then subtract.

Step 3

Exam Tip

पद (60,58,52,40) हैं इसलिए \(a_4=40\) है। गुणनफल निकालकर घटाएँ।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=60\) और (a_{n+1}=a_n-n(n+1)) है तो \(a_4\) क्या होगा? / If \(a_1=60\) and (a_{n+1}=a_n-n(n+1)), what is \(a_4\)?

Correct Answer: A. (40). Explanation: पद (60,58,52,40) हैं इसलिए \(a_4=40\) है। गुणनफल निकालकर घटाएँ। / The terms are (60,58,52,40), so \(a_4=40\). Exam tip: calculate the product and then subtract.

Which concept should I revise for this Mathematics MCQ?

The terms are (60,58,52,40), so \(a_4=40\). Exam tip: calculate the product and then subtract.

What exam hint can help solve this Mathematics question?

पद (60,58,52,40) हैं इसलिए \(a_4=40\) है। गुणनफल निकालकर घटाएँ।